CN110793624A - Sound source calibrating device used in high-speed airflow - Google Patents
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Abstract
本发明提供一种用于高速气流内的校准声源装置，用于气动噪声风洞试验时对噪声测试系统进行校准，能够提高噪声源定位的精度与效率。该装置包括整流罩总成、支撑架、扬声器、透声通道和支杆，所述的整流罩总成上开有透声孔，扬声器与支撑架都安装在整流罩总成内部，扬声器与支撑架固定连接，扬声器的发声部位与透声通道的入口相连，透声通道与支撑架固定连接，透声通道的出口与整流总成上的透声孔相通，支杆的一端穿过整流罩总成与支撑架固定连接；所述的透声孔上蒙有一层卡夫拉布。本装置具有发声面积小、指向性好的优点。
The invention provides a calibration sound source device used in high-speed airflow, used for calibrating a noise testing system during aerodynamic noise wind tunnel test, and can improve the accuracy and efficiency of noise source positioning. The device includes a fairing assembly, a support frame, a loudspeaker, a sound-transmitting channel and a support rod. The fairing assembly is provided with a sound-penetrating hole, the speaker and the support frame are installed inside the fairing assembly, and the speaker and the support The sound-emitting part of the speaker is connected to the entrance of the sound-transmitting channel, the sound-transmitting channel is fixedly connected to the support frame, the outlet of the sound-transmitting channel is connected with the sound-transmitting hole on the fairing assembly, and one end of the support rod passes through the fairing. into a fixed connection with the support frame; the sound-transmitting hole is covered with a layer of kraft cloth. The device has the advantages of small sounding area and good directivity.
Description
技术领域technical field
本发明属于噪声测量技术领域，涉及一种用于高速气流内的校准声源装置。The invention belongs to the technical field of noise measurement, and relates to a calibration sound source device used in high-speed airflow.
背景技术Background technique
在声学风洞中进行气动噪声试验时，一方面需要对噪声测试系统进行现场校准，确保在有高速气流作用下的噪声测试系统工作正常，另一方面，高速气流会影响声波的传播，改变其传播方向与强度，影响噪声测试结果，因此需要获得高速气流对噪声测试结果的影响，并进行相应的修正与处理。常规的校准声源通常是球型或者方形声源，具有体积大、气动外形差、声源面积大等缺点，布置在高速气流中时受到的气动力大、对流场扰动严重并会产生额外的干扰噪声，难以满足在高速气流中对噪声测试系统进行校准的需要。本发明设计了一种可用于高速气流内的校准声源，该声源具有良好的气动外形、较低的气动载荷，同时不会产生额外的气动噪声；采用高声强扬声器发声，具有频率范围宽、发声能力强、发声效果稳定、发声模式可控等优点；声波通过透声孔辐射噪声，具有声源面积小、指向性好等优点。该校准声源可以用于噪声测试系统检验校准、气流影响分析与修正、有气流条件下麦克风相位阵列性能评估等多种用途，能够提高声学风洞中噪声测量的精准度。When conducting aerodynamic noise tests in an acoustic wind tunnel, on the one hand, the noise test system needs to be calibrated on-site to ensure that the noise test system works normally under the action of high-speed airflow. On the other hand, high-speed airflow will affect the propagation of sound waves and change its The propagation direction and intensity affect the noise test results. Therefore, it is necessary to obtain the influence of high-speed airflow on the noise test results, and perform corresponding corrections and processing. The conventional calibration sound source is usually a spherical or square sound source, which has the disadvantages of large volume, poor aerodynamic shape, and large sound source area. It is difficult to meet the needs of calibrating the noise test system in high-speed airflow. The invention designs a calibrated sound source that can be used in high-speed airflow, the sound source has good aerodynamic shape, low aerodynamic load, and does not generate additional aerodynamic noise; high-sound-intensity speakers are used to produce sound, which has a frequency range Wide, strong sounding ability, stable sounding effect, controllable sounding mode, etc.; sound waves radiate noise through sound-transmitting holes, which has the advantages of small sound source area and good directivity. The calibration sound source can be used for various purposes such as inspection and calibration of noise test systems, analysis and correction of airflow effects, and performance evaluation of microphone phase arrays under airflow conditions, which can improve the accuracy of noise measurement in acoustic wind tunnels.
发明内容SUMMARY OF THE INVENTION
基于以上不足之处，本发明提供一种用于高速气流内的校准声源装置，用于气动噪声风洞试验时对噪声测试系统进行校准，能够提高噪声源定位的精度与效率。Based on the above shortcomings, the present invention provides a calibration sound source device used in high-speed airflow, which is used for calibrating a noise test system during aerodynamic noise wind tunnel test, which can improve the accuracy and efficiency of noise source positioning.
本发明的所采用的技术如下：一种用于高速气流内的校准声源装置，包括整流罩总成、支撑架、扬声器、透声通道和支杆，所述的整流罩总成上开有透声孔，扬声器与支撑架都安装在整流罩总成内部，扬声器与支撑架固定连接，扬声器的发声部位与透声通道的入口相连，透声通道与支撑架固定连接，透声通道的出口与整流总成上的透声孔相通，支杆的一端穿过整流罩总成与支撑架固定连接；所述的透声孔上蒙有一层卡夫拉布。The technology used in the present invention is as follows: a calibration sound source device for high-speed airflow, including a fairing assembly, a support frame, a speaker, a sound-transmitting channel and a support rod, and the fairing assembly is provided with a The sound transmission hole, the speaker and the support frame are installed inside the fairing assembly, the speaker and the support frame are fixedly connected, the sound-emitting part of the speaker is connected with the entrance of the sound transmission channel, the sound transmission channel is fixedly connected with the support frame, and the outlet of the sound transmission channel It communicates with the sound-transmitting hole on the fairing assembly, and one end of the strut passes through the fairing assembly and is fixedly connected with the support frame; the sound-transmitting hole is covered with a layer of kraft cloth.
本发明还具有如下技术特征：The present invention also has the following technical features:
1、如上所述的整流罩总成包括前、中、后段整流罩，所述的前、中、后段整流罩的内部分别与支撑架固定连接。1. The fairing assembly described above includes front, middle and rear fairings, and the interiors of the front, middle and rear fairings are respectively fixedly connected to the support frame.
2、如上所述的扬声器安装在中段整流罩的内部，所述的透声孔开在中段整流罩上。2. The above-mentioned loudspeaker is installed inside the middle-section fairing, and the sound-transmitting hole is opened on the middle-section fairing.
3、如上所述的整流罩总成呈椭圆状旋成体结构，整流罩总成的剖面与翼型曲线相对应。3. The fairing assembly as described above has an elliptical spiral structure, and the section of the fairing assembly corresponds to the airfoil curve.
4、如上所述的支杆的另外一端为锥套结构。4. The other end of the support rod as mentioned above is a tapered sleeve structure.
5、如上所述的支杆内部开有走线通道。5. There is a wiring channel inside the support rod as mentioned above.
本发明具有的优点和有益效果：本发明用于气动噪声风洞试验时对噪声测试系统进行校准，提高噪声源定位的精度与效率。便于在高速气流中的布置，同时降低对流场的干扰，避免产生额外的噪声干扰；其次，采用高声强样电动扬声器发声，具有发声能力强、发声效果稳定、发声模式可靠的优点；同时，具有发声面积小、指向性好的优点。Advantages and beneficial effects of the present invention: when the present invention is used for aerodynamic noise wind tunnel test, the noise test system is calibrated, and the accuracy and efficiency of noise source location are improved. It is easy to arrange in high-speed airflow, and at the same time reduces the interference to the flow field and avoids additional noise interference; secondly, the use of high-sound-intensity electric loudspeakers has the advantages of strong sounding ability, stable sounding effect, and reliable sounding mode; at the same time , has the advantages of small sounding area and good directivity.
附图说明Description of drawings
图1为本发明一种用于高速气流内的校准声源装置的结构图；其中1 is a structural diagram of a calibration sound source device used in a high-speed airflow according to the present invention; wherein
1-整流罩，2-透声孔，3-扬声器，4-支撑架，5-透声通道，6-支杆1- fairing, 2- sound hole, 3- speaker, 4- support frame, 5- sound channel, 6- strut
具体实施方式Detailed ways
下面根据说明书附图举例对本发明做进一步说明：The present invention will be further described below according to the accompanying drawings of the description:
实施例1Example 1
如图1所示，一种用于高速气流内的校准声源装置，包括整流罩总成、支撑架、扬声器、透声通道和支杆，所述的整流罩总成上开有透声孔，扬声器与支撑架都安装在整流罩总成内部，扬声器与支撑架固定连接，扬声器的发声部位与透声通道的入口相连，透声通道与支撑架固定连接，透声通道的出口与整流总成上的透声孔相通，支杆的一端穿过整流罩总成与支撑架固定连接；所述的透声孔上蒙有一层卡夫拉布。所述的整流罩总成包括前、中、后段整流罩，每段通过螺钉与支撑架固定连接。中段整流罩沿轴向分成两半，便于扬声器的安装、接线以及维护，扬声器安装在中段整流罩的内部，所述的透声孔开在中段整流罩上。所述的整流罩总成呈椭圆状旋成体结构，整流罩总成的剖面与翼型曲线相对应。所述的支杆的另外一端为锥套结构，实现气流内校准声源在风洞等试验场合中的安装。所述的支杆内部开有走线通道，用于布置扬声器信号线。透声通道用来将扬声器产生的声波传出整流罩，形成点声源；支杆用来连接其它设备，实现校准声源在风洞和其他场合中的安装。扬声器通过螺钉连接在支撑架上，采用高声强扬声器，并在连接部位采用密封圈进行密封处理；扬声器的发声部位与透声通道的入口相连，产生的声波能够进入到透声通道中；透声通道通过螺钉与撑架固定连接，并在连接部位采用密封圈进行密封处理；透声孔上蒙有一层卡夫拉布，用来隔开气流，避免高速气流冲入透声通道5产生强烈的噪声干扰，同时还允许扬声器产生的声波透射出来。本实施例采用气动外形良好的整流罩来隔开气流，减小校准声源受到的气动力，同时降低对流场的干扰，避免产生额外的噪声干扰，扬声器产生的声波沿透声通道向外传，并经过透声孔辐射出来，以减小声源面积，保证其高频时的指向性。整流罩总成采用分段、分块的方式，便于内部扬声器的安装、接线以及维护。As shown in Figure 1, a calibration sound source device for high-speed airflow includes a fairing assembly, a support frame, a speaker, a sound-transmitting channel and a support rod, and the fairing assembly is provided with sound-transmitting holes , The speaker and the support frame are installed inside the fairing assembly, the speaker and the support frame are fixedly connected, the sound-emitting part of the speaker is connected to the entrance of the sound-transmitting channel, the sound-transmitting channel is fixedly connected to the support frame, and the outlet of the sound-transmitting channel is connected to the rectifier. The sound-transmitting holes are communicated with each other, and one end of the support rod is fixedly connected with the support frame through the fairing assembly; the sound-transmitting holes are covered with a layer of kraft cloth. The fairing assembly includes front, middle and rear fairings, each of which is fixedly connected to the support frame by screws. The middle-section fairing is divided into two halves along the axial direction, which is convenient for the installation, wiring and maintenance of the speaker. The speaker is installed inside the middle-section fairing, and the sound transmission hole is opened on the middle-section fairing. The fairing assembly is in the form of an elliptical spiral body structure, and the section of the fairing assembly corresponds to the airfoil curve. The other end of the support rod is a tapered sleeve structure, which realizes the installation of the calibration sound source in the airflow in the test occasions such as the wind tunnel. A wiring channel is opened inside the support rod for arranging the speaker signal line. The sound-transmitting channel is used to transmit the sound wave generated by the speaker out of the fairing to form a point sound source; the support rod is used to connect other equipment to realize the installation of the calibrated sound source in the wind tunnel and other occasions. The loudspeaker is connected to the support frame by screws, using high-sound-intensity loudspeakers, and sealing the connection part with a sealing ring; the sound-emitting part of the loudspeaker is connected to the entrance of the sound-transmitting channel, and the generated sound waves can enter the sound-transmitting channel; The sound channel is fixedly connected with the bracket by screws, and the connection part is sealed with a sealing ring; the sound-transmitting hole is covered with a layer of kraft cloth, which is used to separate the airflow and prevent the high-speed airflow from rushing into the sound-transmitting channel 5. noise interference, while also allowing the sound waves generated by the speakers to pass through. In this embodiment, a fairing with a good aerodynamic shape is used to separate the airflow, reduce the aerodynamic force on the calibration sound source, reduce the interference to the flow field, and avoid additional noise interference. The sound waves generated by the speakers are transmitted outward along the sound transmission channel. , and radiate out through the sound-transmitting hole to reduce the area of the sound source and ensure its directivity at high frequencies. The fairing assembly adopts the method of segment and block, which is convenient for the installation, wiring and maintenance of the internal speakers.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111780943A (en) * | 2020-07-29 | 2020-10-16 | 同济大学 | A sound source combination device for testing |
| CN113766389A (en) * | 2021-11-10 | 2021-12-07 | 中国空气动力研究与发展中心低速空气动力研究所 | Sound production device and system |
| CN114088197A (en) * | 2021-11-19 | 2022-02-25 | 中国航空工业集团公司哈尔滨空气动力研究所 | Low-noise airflow internal noise measuring device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101571448A (en) * | 2009-06-08 | 2009-11-04 | 南京常荣噪声控制环保工程有限公司 | Aero-acoustic experimental apparatus |
| CN104317982A (en) * | 2014-08-26 | 2015-01-28 | 中国直升机设计研究所 | Opening straight-flow wind tunnel low-noise design method |
| WO2019063070A1 (en) * | 2017-09-27 | 2019-04-04 | Harman Becker Automotive Systems Gmbh | Loudspeaker arrangement |
| CN210603585U (en) * | 2019-12-09 | 2020-05-22 | 中国航空工业集团公司哈尔滨空气动力研究所 | Sound source calibrating device used in high-speed airflow |
-
2019
- 2019-12-09 CN CN201911247482.XA patent/CN110793624B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101571448A (en) * | 2009-06-08 | 2009-11-04 | 南京常荣噪声控制环保工程有限公司 | Aero-acoustic experimental apparatus |
| CN104317982A (en) * | 2014-08-26 | 2015-01-28 | 中国直升机设计研究所 | Opening straight-flow wind tunnel low-noise design method |
| WO2019063070A1 (en) * | 2017-09-27 | 2019-04-04 | Harman Becker Automotive Systems Gmbh | Loudspeaker arrangement |
| CN210603585U (en) * | 2019-12-09 | 2020-05-22 | 中国航空工业集团公司哈尔滨空气动力研究所 | Sound source calibrating device used in high-speed airflow |
Non-Patent Citations (1)
| Title |
|---|
| 谷嘉锦: "高声强声源及其应用", 声学技术, no. 01, 5 February 1997 (1997-02-05) * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111780943A (en) * | 2020-07-29 | 2020-10-16 | 同济大学 | A sound source combination device for testing |
| CN113766389A (en) * | 2021-11-10 | 2021-12-07 | 中国空气动力研究与发展中心低速空气动力研究所 | Sound production device and system |
| CN114088197A (en) * | 2021-11-19 | 2022-02-25 | 中国航空工业集团公司哈尔滨空气动力研究所 | Low-noise airflow internal noise measuring device |
| CN114088197B (en) * | 2021-11-19 | 2023-07-14 | 中国航空工业集团公司哈尔滨空气动力研究所 | Low-noise air flow internal noise measuring device |
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